Hi Mate

No problem, just make sure you pm me to point me at your youtube, interested to see how you get on! I'm black5f on YT as well, basically , a black 5 is a steam engine!

Make sure your endmills are capable of plunge cutting if thats what you need to do. Endmills will give a flat face, they have a flat end, but cannot always cut nicely in plunge and on hard materials and can skate a bit before they bite. One of the teeth needs to extend all the way across the centre, so they are not symetrical when looked at from the bottom. Slot drils will plunge and slot but don't give such a clean bottom to the slot. Most end mils plunge nicely but beacause they are flat, I find you get a neater finnish on blind slots if the plunge is taken a bit gentler. At the end of the day you just have to play with speeds and feeds till your happy with the finnish. Try some nickle silver, it's nice to cut, chips nicely and doesn't tarnish. Sounds like your having fun!

Tom